The drier months of June to September are the best time to visit Rwanda to go gorilla trekking. During this period, there is fewer rain showers, making it great to explore the national parks for game spotting. To make the most of the great outdoors, we recommend you avoid the months between March and May, which mark the rainy season in Rwanda. Uganda has two dry seasons – December to February, and between June and August, both periods are great to spot mountain gorillas in its Bwindi Impenetrable Forest.